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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3472/CH34/EX34.6/Example34_6.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3472/CH34/EX34.6/Example34_6.sce')
| -rw-r--r-- | 3472/CH34/EX34.6/Example34_6.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/3472/CH34/EX34.6/Example34_6.sce b/3472/CH34/EX34.6/Example34_6.sce new file mode 100644 index 000000000..8512df487 --- /dev/null +++ b/3472/CH34/EX34.6/Example34_6.sce @@ -0,0 +1,28 @@ +// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION
+
+// PART III : SWITCHGEAR AND PROTECTION
+// CHAPTER 8: PROTECTION OF ALTERNATORS AND AC MOTORS
+
+// EXAMPLE : 8.6 :
+// Page number 626
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+MVA = 50.0 // Alternator rating(MVA)
+kV = 11.0 // Alternator voltage(kV)
+X = 2.0 // Synchronous reactance per phase(ohm)
+R = 0.7 // Resistance per phase(ohm)
+R_n = 5.0 // Resistance through which alternator is earthed(ohm)
+ofb = 25.0 // Out-of-balance current(%)
+
+// Calculations
+I_fl = MVA*1000/(3**0.5*kV) // Full load current(A)
+I_ofb = ofb/100*I_fl // Out-of-balance current(A)
+x = R_n/((kV*1000/(3**0.5*100*I_ofb))-(R/100)) // Portion of winding unprotected(%)
+
+// Results
+disp("PART III - EXAMPLE : 8.6 : SOLUTION :-")
+printf("\nPortion of winding unprotected, x = %.f percent", x)
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